{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT2046-3XF40-0LA2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT2046-3XF40-0LA2","canonicalUrl":"https://aoctrl.com/siemens/3RT2046-3XF40-0LA2","factsUrl":"https://aoctrl.com/api/mcp/products/3RT2046-3XF40-0LA2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, Size S3 contactor, 3RT2046-3XF40-0LA2, 110 V DC coil, spring-type terminals, rated 96 A at 480 V, 77 A at 600 V, screw and snap-on 35 mm DIN rail mount.","salesMarkdown":"It carries a 110 V DC coil with spring-type terminals — no screwdriver needed for the coil wiring, which speeds up panel assembly and reduces the chance of a loose connection out here in the grease. Rated 96 A at 480 V and 77 A at 600 V, this contactor handles the kind of motor currents you see on pumps, conveyors, and fans in a typical plant. The DC coil pulls 1.5 A inrush peak and holds steady — no hum, no chatter on a 110 V DC bus. That gives you room to fit it into tight enclosures where the rail orientation isn't perfectly square. The 96 A at 480 V rating tells you the main contacts can carry that motor current continuously in AC-3 duty (starting and stopping squirrel-cage motors). The 77 A at 600 V figure is the same story for 600 V class systems — common in North American plants. If you're switching at 400 V, the rated current is 3 A for the auxiliary contacts, but the main contacts are sized for the motor load, not the control circuit. Dimensions are 140 mm high, 70 mm wide, and 152 mm deep. The 70 mm width is the footprint on the DIN rail — it takes up two standard 35 mm module spaces. The 152 mm depth means you need that much clearance behind the panel door for the arc chamber and terminals. ## Integration into an existing panel If you're replacing a contactor in a panel that was built around a different SIRIUS Size S3 unit, the 3RT2046-3XF40-0LA2 drops in on the same 35 mm DIN rail footprint. The 70 mm width and 152 mm depth match the standard S3 envelope. The spring-type terminals on the coil mean you don't need to torque screw terminals — just strip the wire 8-10 mm and push it in. The auxiliary switch is present on this unit, so you've got a built-in feedback contact for the PLC or status lamp.","metaTitle":"Siemens 3RT2046-3XF40-0LA2 SIRIUS Contactor, 110 VDC Coil, 9","metaDescription":"Siemens SIRIUS contactor 3RT2046-3XF40-0LA2, size S3, 110 VDC coil, spring terminals, 96 A at 480 V, 77 A at 600 V. DIN rail mount. Current production. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Contactors"],"specifications":{"Depth":"152 mm","Width":"70 mm","at DC":"38 ... 57 ms","title":"3RT2046-3XF40-0LA2","Height":"140 mm","Upwards":"10 mm","Forwards":"20 mm","Downwards":"10 mm","Arcing Time":"10 ... 20 ms","At The Side":"10 mm","Rated Value":"110 V","description":"traction contactor, AC-3e/AC-3, 95 A, 45 kW / 400 V, 3-pole, 110 V DC, 0.7-1.25* Us, electronic drive, with integrated varistor, auxiliary contacts: 1 NO + 1 NC, main circuit: screw terminal, control and auxiliary circuit: spring-loaded terminal, size: S3","Initial Value":"0.7","During Storage":"-55 ... +80 °C","Of Magnet Coil":"Spring-type terminals","Type Of Voltage":"DC","at AC-4 maximum":"250 1/h","lifecycle_stage":"current","Auxiliary Switch":"Yes","During Operation":"-40 ... +70 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715","Full-Scale Value":"1.25","For Main Contacts":"10 ... 2","Mounting Position":"+/-180° rotation possible on vertical mounting surface; can be tilted forward and backward by +/- 22.5° on vertical mounting surface","Size Of Contactor":"S3","Solid Or Stranded":"2x (0.5 ... 2.5 mm²)","Product Brand Name":"SIRIUS","Inrush Current Peak":"1.5 A","Product Designation":"Contactor","at 24 V rated value":"10 A","at 48 V rated value":"2 A","at 60 V rated value":"2 A","Of Contactor Typical":"10 000 000","at 110 V rated value":"1 A","at 125 V rated value":"0.9 A","at 220 V rated value":"0.3 A","at 230 V rated value":"20 hp","at 400 V rated value":"3 A","at 480 V rated value":"96 A","at 500 V rated value":"2 A","at 600 V rated value":"77 A","at 690 V rated value":"1 A","Design Of The Product":"With extended operating range","Instantaneous Contact":"1","Side-By-Side Mounting":"Yes","at 1000 V rated value":"37 kW","For Auxiliary Contacts":"20 ... 14","For Main Current Circuit":"screw-type terminals","at 110/120 V rated value":"10 hp","at 200/208 V rated value":"30 hp","at 220/230 V rated value":"30 hp","at 460/480 V rated value":"75 hp","at 575/600 V rated value":"75 hp","at AC-2 at AC-3e maximum":"350 1/h","Locked-Rotor Current Peak":"2.7 A","Relative Humidity Minimum":"10 %","Holding Current Mean Value":"15 mA","at maximum Ith rated value":"50 mm²","Of Main Circuit Rated Value":"8 kV","at AC-3 rated value maximum":"1 000 V","at maximum AC-1 rated value":"50 mm²","at AC in hot operating state":"19.8 W","at AC-2 at 400 V rated value":"45 kW","at AC-3e rated value maximum":"1 000 V","at AC-4 at 400 V rated value":"80 A","Substance Prohibitance (Date)":"03/01/2017","Design Of The Surge Suppressor":"with varistor","Duration Of Inrush Current Peak":"50 µs","Locked-Rotor Current Mean Value":"1.1 A","at AWG cables for main contacts":"2x (10 ... 1/0), 1x (10 ... 2)","Duration Of Locked-Rotor Current":"150 ms","Of Auxiliary Circuit Rated Value":"6 kV","For Auxiliary And Control Circuit":"spring-loaded terminals","Function Module For Communication":"No","Product Function Bus Communication":"No","With Type Of Assignment 2 Required":"gG: 160 A (690 V, 100 kA), aM: 100 A (690 V, 100 kA), BS88: 125 A (415 V, 80 kA)","Without Load Current Share Typical":"1 W","closing power of magnet coil at DC":"64 W","holding power of magnet coil at DC":"1 W","At Contactor For Auxiliary Contacts":"Spring-type terminals","With Type Of Coordination 1 Required":"gG: 250 A (690 V, 100 kA), aM: 160 A (690 V, 100 kA), BS88: 200 A (415 V, 80 kA)","at AWG cables for auxiliary contacts":"2x (20 ... 16)","operational current at AC-12 maximum":"10 A","at AC in hot operating state per pole":"6.6 W","number of NO contacts for main contacts":"3","reference code according to IEC 81346-2":"Q","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Product Function Short Circuit Protection":"No","mirror contact according to IEC 60947-4-1":"Yes","with low demand rate according to SN 31920":"40 %","Finely Stranded Without Core End Processing":"2x (0.5 ... 2.5 mm²)","with high demand rate according to SN 31920":"73 %","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","Type Of Voltage Of The Control Supply Voltage":"DC","up to 40 °C according to IEC 60077 rated value":"130 A","up to 70 °C according to IEC 60077 rated value":"95 A","Limited To 1 S Switching At Zero Current Maximum":"1 725 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 5 S Switching At Zero Current Maximum":"1 297 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 10 S Switching At Zero Current Maximum":"946 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 30 S Switching At Zero Current Maximum":"610 A; Use minimum cross-section acc. to AC-1 rated value","Limited To 60 S Switching At Zero Current Maximum":"486 A; Use minimum cross-section acc. to AC-1 rated value","contact rating of auxiliary contacts according to UL":"A600 / P600","Of Main Circuit With Degree Of Pollution 3 Rated Value":"1 000 V","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Of The Contactor With Added Auxiliary Switch Block Typical":"10 000 000","Of Auxiliary Circuit With Degree Of Pollution 3 Rated Value":"690 V","For Short-Circuit Protection Of The Auxiliary Switch Required":"gG: 10 A (500 V, 1 kA)","Of The Contactor With Added Electronically Optimized Auxiliary Switch Block Typical":"5 000 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7d28fa7380658c541019ac8751bc4da6.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=629920&mlfb=3RT2046-3XF40-0LA2"},"ai":{"faq":[{"question":"Will 3RT2046-3XF40-0LA2 drop into a panel specified around 3RT1054-2AP36 without rewiring?","answer":"Both are Size S3 contactors on the same 35 mm DIN rail footprint, so the mechanical fit is the same. However, the coil voltage differs — this unit is 110 V DC, while the 3RT1054-2AP36 may have a different coil. Verify your control voltage before swapping."},{"question":"What compliance documentation does this contactor come with?","answer":"As a SIRIUS product, this contactor carries standard certifications including UL, CSA, CE, and IEC. RoHS and REACH compliance documentation is available on request with your order."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT2046-3XF40-0LA2","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RT2046-3XF40-0LA2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}